CN105071690B - A kind of stability maintenance of piezoelectric straight line start two is as platform - Google Patents
A kind of stability maintenance of piezoelectric straight line start two is as platform Download PDFInfo
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- CN105071690B CN105071690B CN201510425642.0A CN201510425642A CN105071690B CN 105071690 B CN105071690 B CN 105071690B CN 201510425642 A CN201510425642 A CN 201510425642A CN 105071690 B CN105071690 B CN 105071690B
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Abstract
The invention provides a kind of stability maintenance of novel piezoelectric straight line start two as platform, this makees moving platform can do two-way active displacement output respectively in X and Y-direction, so as to be combined into the start of optional position in plane.X and Y-direction are formed in parallel by two identical piezoelectric straight line actuator respectively, this piezoelectric straight line actuator is composed in series by two different triangle amplifying type micro displacement magnifying mechanisms, triangle enlarger separately design for positive triangle amplification make moving cell and inverted triangle amplification make moving cell, so as to realize the requirement of double action in x and y direction.Parallel connection of the invention by aligning triangle enlarger and inverted triangle enlarger series unit, the two-way active displacement output target on a direction can be realized, it is steady as the optional position start of platform eyeglass so as to meet, while can also export the power met required for platform motion.
Description
Technical field
The present invention relates to Precision Piezoelectric micro-displacement photorefractive crystals technical field, particularly a kind of stability maintenance of piezoelectric straight line start two
As platform.
Background technology
With the increase of strapdown infrared imaging products application, it is badly in need of the breakthrough of photorefractive crystals technology.Due to target with it is infrared
Relative motion is there is between detection system, when speed of related movement it is big to a certain extent when, the image of detector collection becomes
It is fuzzy, make infrared imaging product can not normal work.At this time need to increase photorefractive crystals system in imaging product, in optics
Increase the Individual elements in micro-displacement apparatus real time moving image collection lens set in system to reach the effect of stable image.
Piezoelectric straight line actuator utilizes the inverse piezoelectric effect of piezoelectric, is made of specific structure.This actuator
Efficiency high during with miniaturization, can directly produce straight line output, fast simple in construction, response, position and velocity control accuracy height, nothing
The advantages of electromagnetic interference, it is widely used in the high-technology fields such as precision instrumentation, Aero-Space, medical treatment, robot, embodies
Its exclusive use value.
According to the difference of piezoelectric straight line actuator drive mechanism, resonant and non-resonant can be divided into.Resonant piezoelectricity is straight
Line motor is to be amplified the micro breadth oscillation of elastomer by resonating using the inverse piezoelectric effect and ultrasonic vibration principle of piezoelectric element
The macroscopic view linear motion of mover is converted into friction coupling principle.Non-resonant motor is used as exciting using lamination piezoelectric ceramics
Element, stacked piezoelectric ceramics can have larger displacement output under small voltage driving, and stator can make driving foot without resonance
Produce enough amplitudes to drive mover, mainly there is direct drive, looper principle type, displacement equations formula and impact type.
In non-resonant piezoelectric linear motor, displacement equations formula is using displacement amplifying mechanism to stacked piezoelectric ceramics
Output displacement is amplified, so as to solve the problem of piezoelectric linear motor output displacement is not enough.Micro-displacement amplification common at present
There are a variety of piezoelectricity micro displacement magnifying mechanisms such as lever amplification, amplification of buckling, bridge-type amplification and triangle amplification in mechanism.But it is due to pressure
The limitation of electric material characteristic, micro displacement magnifying mechanism common at present can only be realized to be obtained just by piezoelectric thrust output
Exported to active, and reversely backhaul can only rely on the elasticity in enlarger to recover to realize.
The content of the invention
It is flat it is an object of the invention to provide a kind of stability maintenance picture of piezoelectric straight line start two for the deficiency of above-mentioned background technology
Platform, realizes the start to plane optional position；Make moving cell realizes equilbrium position both sides while displacement equations are realized
Two-way active displacement output target, realize control of the enlarger to outbound course and size.
The present invention uses following technical scheme to solve above-mentioned technical problem：
A kind of stability maintenance of piezoelectric straight line start two as platform, including it is steady as platform a, piezo-electric drive units b, fixed end face b1,
Some connection members；Piezo-electric drive units b, Piezoelectric Driving are connected to by connection member in the steady a line as platform a
Unit b is connected on fixed end face b1 by connection member；Wherein, the piezo-electric drive units b is using positive triangle microbit of connecting
The structure for moving enlarger d and inverted triangle micro displacement magnifying mechanism e produces the two-way active output of positive, negative sense.
A positive triangle micro displacement magnifying mechanism d and inverted triangle micro displacement magnifying mechanism e piezoelectric straight line in series
Actuator c, the piezo-electric drive units b are provided with several piezoelectric straight line actuator c in parallel.
The piezoelectric straight line actuator c is logical in the middle of triangle micro displacement magnifying mechanism d and inverted triangle micro displacement magnifying mechanism e
Cross the affixed series connection of bloom c1 to be formed, the other end of the positive triangle micro displacement magnifying mechanism d is connected to steady picture by connection member
In platform a a line, the inverted triangle micro displacement magnifying mechanism e other end is connected on fixed end face b1 by connection member.
The positive triangle micro displacement magnifying mechanism d includes positive piezoelectric stack d1, positive cushion block d2 and positive three-legged structure steelframe
d3；Positive piezoelectric stack d1 two ends nestle up two positive cushion block d2, are integrally placed in outside positive three-legged structure steelframe d3.
The inverted triangle micro displacement magnifying mechanism e includes the e1 of falling piezoelectric stack, the e2 of falling cushion block and inverted triangle structural steel
e3；The two ends for the e1 of falling piezoelectric stack nestle up two e2 of falling cushion block, are integrally placed in outside inverted triangle structural steel e3.
The steady picture platform a is provided with piezo-electric drive units b and the fixation for being designed with being sequentially connected in some sides, each edge
End face b1.
The connection member is flexible hinge a2.
The present invention uses above technical scheme compared with prior art, with following technique effect：
Two stability maintenance is amplified as platform using triangle amplifying type principle to the deformation of piezoelectric stack, so that needed for obtaining
Displacement request on direction, is in series using positive trigonometric expression micro displacement magnifying mechanism and inverse triangle type micro displacement magnifying mechanism
Piezoelectric straight line actuator realizes the target of two-way active output displacement in same direction, using two piezoelectric straight line actuator in parallel
To realize on a direction to the steady target as platform power output, acted using the two-direction, main in orthogonal both direction dynamic
It is steady as platform is in the displacement target of plane optional position to realize.
Brief description of the drawings
Fig. 1 is the stability maintenance of piezoelectric straight line start two of the present invention as the top view of platform；
Fig. 2 is the stability maintenance of piezoelectric straight line start two of the present invention as the stereogram of platform；
Fig. 3 is steady as the structural representation of platform in the present invention；
Fig. 4 is the structural representation of driver element in the present invention；
Fig. 5 is the structural representation of piezoelectric straight line actuator in the present invention；
Fig. 6 is the positive triangle micro displacement magnifying mechanism schematic diagram of the present invention；
Fig. 7 is inverted triangle micro displacement magnifying mechanism schematic diagram of the present invention；
Wherein, a- is steady as platform, b- piezo-electric drive units, c- piezoelectric straight lines actuator, the positive triangle micro-displacement enlargers of d-
It is steady as eyeglass, a2- flexible hinges, c1- blooms that structure, e- inverted triangles micro displacement magnifying mechanism, b1- fix end face, a1-；
The positive piezoelectric stacks of d1-, the positive cushion blocks of d2-, the positive three-legged structure steelframes of d3-；
E1- piezoelectric stacks, e2- fall cushion block, e3 inverted triangle structural steels.
Embodiment
The present invention provides a kind of stability maintenance of piezoelectric straight line start two as platform, to make the purpose of the present invention, technical scheme and effect
Fruit is clearer, clearly, and referring to the drawings and gives an actual example that the present invention is described in more detail.It should be appreciated that this place is retouched
The specific implementation stated only to explain the present invention, is not intended to limit the present invention.
The technical scheme to invention is described in detail below in conjunction with the accompanying drawings：
A kind of stability maintenance of piezoelectric straight line start two as platform, including it is steady as platform a, piezo-electric drive units b, fixed end face b1,
Some connection members；Piezo-electric drive units b, Piezoelectric Driving are connected to by flexible hinge in the steady a line as platform a
Unit b is connected on fixed end face b1 by flexible hinge；Steady picture platform a is provided with two orthogonal sides, each edge
Provided with the piezo-electric drive units b being sequentially connected and fixed end face b1；Wherein, the piezo-electric drive units b is using positive triangle of connecting
Micro displacement magnifying mechanism d and inverted triangle micro displacement magnifying mechanism e structure produce the two-way active output of positive, negative sense.
A positive triangle micro displacement magnifying mechanism d and inverted triangle micro displacement magnifying mechanism e piezoelectric straight line in series
Actuator c, the piezo-electric drive units b are provided with several piezoelectric straight line actuator c in parallel；The piezoelectric straight line actuator c
For in the middle of triangle micro displacement magnifying mechanism d and inverted triangle micro displacement magnifying mechanism e by bloom c1 it is affixed series connection formed, it is described just
The triangle micro displacement magnifying mechanism d other end is connected in the steady a line as platform a by connection member, inverted triangle micro-displacement
The enlarger e other end is connected on fixed end face b1 by connection member.
The positive triangle micro displacement magnifying mechanism d includes positive piezoelectric stack d1, positive cushion block d2 and positive three-legged structure steelframe
On d3；Positive piezoelectric stack d1 two ends nestle up two positive cushion block d2, are integrally placed in outside positive three-legged structure steelframe d3；Institute
Inverted triangle micro displacement magnifying mechanism e is stated including on the e1 of falling piezoelectric stack, the e2 of falling cushion block and inverted triangle structural steel e3；Piezoelectricity
The two ends for stacking e1 nestle up two e2 of falling cushion block, are integrally placed in outside inverted triangle structural steel e3.
Below, illustrate two stability maintenance as the start method of platform：
When initial pretension is provided by the pressure that cushion block d2, e2 and outside steelframe d3, e3 are respectively piezoelectric stack d1, e1
Power, driver element b one end is connected by flexible hinge a2 and platform a connections, the other end by flexible hinge b2 and fixed end face b1
Connect, each part remains static.
For the displacement of minute surface optional position in the plane, two mutually perpendicular X and Y in accompanying drawing 1 are can be broken into
The displacement in direction, then realizes its displacement by all directions as moving cell.
For the positive displacements of X, apply a forward voltage in two inverted triangle micro displacement magnifying mechanism e of X-direction
Piezoelectric stack e1, piezoelectric stack e1 elongation so that outside del steelframe e3 X forward direction output respond displacement.It is right
In the displacement of X negative senses, apply piezoelectric stack of the forward voltage in two positive triangle micro displacement magnifying mechanism d of X-direction
D1, piezoelectric stack d1 extend, so that displacements of the outside equilateral triangle steelframe d3 in X forward direction output responses.
For the positive displacements of Y, apply in the two inverted triangle micro displacement magnifying mechanism e of a forward voltage in the Y direction
Piezoelectric stack e1, piezoelectric stack e1 elongation so that outside del steelframe e3 Y forward direction output respond displacement.It is right
In the displacement of Y negative senses, apply the piezoelectric stack in the two positive triangle micro displacement magnifying mechanism d of a forward voltage in the Y direction
D1, piezoelectric stack d1 extend, so that displacements of the outside equilateral triangle steelframe d3 in Y forward direction output responses.
It is superimposed by two displacement vectors of X and Y-direction, completes the displacement of eyeglass planar required optional position
Start.
It is obvious to a person skilled in the art that the invention is not restricted to above-mentioned exemplary details, and without departing substantially from
In the case of the spirit or essential attributes of the present invention, the present invention can be realized in other specific forms.Therefore, no matter from which
From the point of view of point, this specification all should be regarded as exemplary, and be nonrestrictive, the scope of the present invention will by appended right
Ask rather than described above is limited, it is intended that all changes in the implication and scope of the equivalency of claim will be fallen
Include in the present invention.Any reference in claim should not be considered as to the claim involved by limitation.It should refer to
Go out, for those skilled in the art, under the premise without departing from the principles of the invention, can also make some
Improve, these improvement also should be regarded as protection scope of the present invention.
Claims (7)
1. a kind of stability maintenance of piezoelectric straight line start two is as platform, it is characterised in that：Including steady as platform (a), piezo-electric drive units
(b), fixed end face (b1), some connection members；Piezoelectricity is connected to by connection member in a line of the steady picture platform (a)
Driver element (b), piezo-electric drive units (b) are connected on fixed end face (b1) by connection member；Wherein, the Piezoelectric Driving
Unit (b) is produced just using the structure of connect positive triangle micro displacement magnifying mechanism (d) and inverted triangle micro displacement magnifying mechanism (e)
To the two-way active output of, negative sense.
2. a kind of stability maintenance of piezoelectric straight line start two according to claim 1 is as platform, it is characterised in that：The positive triangle is micro-
Displacement amplifying mechanism (d) and inverted triangle micro displacement magnifying mechanism (e) piezoelectric straight line actuator (c) in series, the pressure
Electric drive unit (b) is provided with several piezoelectric straight line actuator (c) in parallel.
3. a kind of stability maintenance of piezoelectric straight line start two according to claim 2 is as platform, it is characterised in that：The piezoelectric straight line
Actuator (c) is affixed by bloom (c1) in the middle of triangle micro displacement magnifying mechanism (d) and inverted triangle micro displacement magnifying mechanism (e)
Series connection is formed, and the other end of the positive triangle micro displacement magnifying mechanism (d) is connected to the one of steady picture platform (a) by connection member
On bar side, the other end of inverted triangle micro displacement magnifying mechanism (e) is connected on fixed end face (b1) by connection member.
4. a kind of stability maintenance of piezoelectric straight line start two according to claim 3 is as platform, it is characterised in that：The positive triangle is micro-
Displacement amplifying mechanism (d) includes positive piezoelectric stack (d1), positive cushion block (d2) and positive three-legged structure steelframe (d3)；Positive piezoelectric stack
(d1) two ends nestle up two positive cushion blocks (d2), are integrally placed in outside positive three-legged structure steelframe (d3).
5. a kind of stability maintenance of piezoelectric straight line start two according to claim 3 is as platform, it is characterised in that：The inverted triangle is micro-
Displacement amplifying mechanism (e) includes piezoelectric stack (e1), cushion block (e2) and inverted triangle structural steel (e3)；Piezoelectric stack
(e1) two ends nestle up two cushion blocks (e2), are integrally placed in outside inverted triangle structural steel (e3).
6. any one stability maintenance of piezoelectric straight line start two according to claim 1 to 5 is as platform, it is characterised in that：It is described
Steady picture platform (a) is provided with the piezo-electric drive units (b) for being designed with being sequentially connected in some sides, each edge and fixed end face
(b1)。
7. a kind of stability maintenance of piezoelectric straight line start two according to claim 6 is as platform, it is characterised in that：The connection member
For flexible hinge (a2).
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| CN105429504A (en) * | 2015-12-12 | 2016-03-23 | 西安交通大学 | Bidirectional piezoelectric stack actuator with diamond and hourglass-shaped mechanisms connected in series and actuating method thereof |
| KR102508530B1 (en) | 2018-05-09 | 2023-03-09 | 삼성전자주식회사 | Camera module having stabilizer and electronic device including thereof |
| CN109491078A (en) * | 2019-01-07 | 2019-03-19 | 南京理工大学 | A kind of high-precision micro scanning device |
| CN112817161B (en) * | 2021-01-07 | 2022-04-22 | 南京航空航天大学 | Optical image stabilization device based on piezoelectric stack and control system thereof |
| CN113037130B (en) * | 2021-04-23 | 2024-04-19 | 吉林大学 | Dual-mode miniature linear ultrasonic motor and driving method thereof |
| CN114421806B (en) * | 2022-01-09 | 2024-03-08 | 西北工业大学 | Accurate two-dimensional steady image device based on piezoelectric stack |
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| CN1317815C (en) * | 2004-03-18 | 2007-05-23 | 清华大学 | Mini piezoelectric drive for MEMS |
| JP4059322B2 (en) * | 2004-10-19 | 2008-03-12 | 松下電器産業株式会社 | Piezoelectric actuator, imaging device moving apparatus and imaging apparatus using the same |
| JP2012029478A (en) * | 2010-07-23 | 2012-02-09 | Olympus Corp | Vibrator and ultrasonic motor |
| JP2012044832A (en) * | 2010-08-23 | 2012-03-01 | Canon Inc | Oscillatory wave driving device and image blur correction device |
| CN103187900B (en) * | 2011-12-27 | 2016-01-20 | 中国科学技术大学 | Frictional force is from high symmetry four friction piezoelectric motor coordinated and control method thereof |
| CN204906221U (en) * | 2015-07-20 | 2015-12-23 | 南京航空航天大学 | Novel it is steady for instance platform that piezoelectricity sharply actuates two dimension |
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